Home / 20,709.74-31,065.12-7,562.16

Finding the Fourth Proportional to 20,709.74, 31,065.12 and 7,562.16

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Solution

The fourth proportional to 20,709.74, 31,065.12 and 7,562.16 is: 11,343.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,709.74 : 31,065.12 = 7,562.16 : x
  2. Step 2: Convert to fraction form
    20,709.74/31,065.12 = 7,562.16/x
  3. Step 3: Cross multiply
    20,709.74x = 31,065.12 × 7,562.16
  4. Step 4: Simplify right side
    20,709.74x = 234,919,407.86
  5. Step 5: Solve for x
    x = 234,919,407.86/20,709.74
  6. Step 6: Final answer
    x = 11,343.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.